muckenhirn



' (No Model.) 2Sheets-Sheet 1.

G. H. MUGKENHIRN.

APPARATUS FOR CASTING TRAPS.

No. 431,609. Patented July 8, 1890.

WITNESSES IWVEJVTOR M54. m 7f if m r;

(No Model.) 2 Sheets-Sheet 2.

0. H. MUCKENHIRN. APPARATUS FOR CASTING TRAPS.

No. 431,609. Patented July 8, 1890.

I E 6 g V e .2 Fig.4. E/ZZ 07B A @C A 5 Jz" f J TWESSES IWVEWIOR M am, 7f ij wr UNITED STATES v PATENT O ICE.

CHARLES H. MUOKENHIRN, OF DETROIT, MICHIGAN, ASSIGNOR TO THE- DETROIT SANITARY SUPPLYCOMPANY, OF SAME PLACE.

APPARATUS'FORZCASTING TRAPSQ SPECIFICATION forming partofjLetters Patent No. 431,609, dated July 8, 1890.

Application filed February 5, 1890. Serial 110,339,272. (No model.)

To all whom it may concern.-

HIRN, a citizen of the United States, residing at Detroit, county of \Vayne, State of Michigan, have invented a certain new anduseful Improvement in Apparatus for Molding Hydraulic Traps; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make anduse the same, reference being had to the accompanying drawings, which form a part of this specification. 7

In the drawings, Figure 1 represents a longitudinal sectional view of my said flask, illustrating the trap also in section, with its cores in elevation and with the 'flask rotated into a horizontal position. Fig. 2 is a separate view of the large interior core and the elbow-cores, all in section. Fig. 3 is a side elevation of an apparatus embodying my invention with the hand-wheel removed from the screw-shaft F Fig. 4 is a plan view of the flask with the top of the frame removed. Fig. 5 is a section on the line :10 a" of Fig. 1.

It is the purpose of my invention to facilitate the casting of sewer and other traps; and it consists, essentially, in peculiar means for removing the straight cores, for engaging and disengaging the elbow-cores therefrom, for subsequently removing the elbow-cores, and, also in mechanism for conveniently handling the flask.

In carrying out my invention, A represents a frame consisting of uprights, which come together at the top. I prefer that there shall be only three of these upright-s, as shown at A in Fig. 1, at the three corners of the frame, so as to leave the other corner free to facilitate the handling of a ladle and the pouring of the metal.

B represents the cope, and B the drag, of the flask. These two parts are hinged together at b.

b represents an elongated orifice through both the cope and the drag, adapted to receive a locking pin or key 19 whereby the cope and drag may be firmly fastened together. The parts of the flask are both made of metal, and themselves constitute the mold within-whichthe trap is cast. The flask is pivoted'at B to the frame, and a handle B serves to rotate it from its vertical position to a horizontal position, and vice versa.

C represents a plunger adapted to be run down onto the molten metal to compress it in the flask, thereby making the casting more dense and obviating the liability of flaws or cold-shorts.

D represents the cavity within the flask, into which the metal is molded, and in Fig. 1 the trap is shown in section within said cavity or mold.

01 represents the cavity orsprue orifice in the flask, into which the metal is poured. This cavity is wide at the mouth to easily receive the molten lead; but at d it is narrowed,

'and, while extending to the bottom of the said mold, and any air confined therein willv find egress through the same slot above the level of molten metal until it is entirely driven out and replaced by the metal. This leaves the corresponding side of the trap connected with the sprue or riser by a thin fin of metal, which permits of the same being easily broken away from the trap-casting.

E represents the upper core corresponding with the large central chamber of the trap. It is provided with a spud or core-print e for supporting its inner end, and which forms in thecasting an orifice which is subsequently closed by hand. The interior of this core is threaded to receive a screw-shaft E, which is so arranged that when the flask is rotated down into its horizontal position a shoulder e on the shaft may abut against the frame and be held in a fixed position as the screw is turned within the core, thus causing the core to move out along the screw. F represents a similar core corresponding with the outlet-passage of the trap, and this is engaged at its inner end with the elbow-core by a screw engagement f, and has an arbor f on its outer end for the reception of a wrench for unscrewing it and removing it from the casting. F is a similar core for the inlet-passage. It is engaged by a dowel-pin f with its elbowcore, and is provided with a screw-shaft F for removing the same in a manner similar to the shaft E.-

G represents elbow-cores, which are each provided with slots 9 adjacent to the principal core E. The core E is provided. with spring-latches g, adapted to pass up through the said slots and to engage over an interior rib or flange g thus serving to hold this elbow-core snugly in position against the principal core. The latch g is, however, so shaped that as the core E is withdrawn from the casting it will ride beneath the rear end of the said slots g, so that as the latch disengagesfrom the elbow-core it is forced down into a cavity g in thecore E, so as not to catch on the casting as the core is withdrawn. The core E having been thus withdrawn, and the cores F F removed in like manner, the operator may with astick or other tool reach into the cored passage at F F and poke the elbowcores into the central cavity of the trap at E,

- and from thence they may be dropped out at the extremity of thetrap. It is thus seen that all of the cores may be made of metal or other rigid material, and the operation of casting can be accomplished with great facility.

At the extremity of each 'core E F there is provided a through-orifice H, preferably conical, for the reception of conical pins. (Shown with their handles H in Figs. 3 and 4.) These are designed simply to hold the cores in their exact proper positions within the flask before pouring the metal.

A represents a lateral frame projecting from the main frame, designed as the flask is rotated into its horizontal position to form a suitable abutment for the shoulder a of the handle employed for turning the screw-shaft E, so that when the said shaft is turned by the handle the handle and the shaft will be held against longitudinal movement, and

thereby compel the core to move out from its position in the casting along the said shaft. As soon as it isloosened it maybe withdrawn by hand.

The lateral frame A is provided with a recess a to facilitate this hearing of the said gagement at f, which prevents any longitudinal displacement of the core. This core F is then unscrewed and loosened from its seat by a wrench placed upon the arbor f, and when thus loosened may be removed; but the elbow-core G, adjacent to the core F, is prevented fromlongitudinal displacement by its latch g. The core F is therefore engaged with the elbow-core by simply a dowel engagement at f and is withdrawn by a screw E the same as the core E is withdrawn by a straight pull to loosen it, after which it may be removed by hand.

As will be seen in Fig. 3, the end of the screw F has an arbor on which a hand-Wheel may be placed, this latter being removable, so as not to conflict with the plunger 0.

What I claim is-' 1. The herein-described apparatus for easting traps, the same consisting of the two-part hinged flask having pivots B the frame A, in which said flask is pivoted, the threaded cores E, F, and F, for the main chamber and inlet and outlet passages, the screw-shafts engaged with said cores, and means, substantially as-described, for rotating said shafts and holding them against longitudinal movement, substantially as and for the purpose specified.

2. The combination, with the straight cores E, F, and F, of the elbow-cores G G, having slotted ends, and the spring-latches located in the core E to engage the slotted ends of the elbow-cores and hold said cores in position, said latches adapted to become automatically disengaged from the elbow-cores as the main core is removed, substantially as described.

3. The combination, with the principal core and the elbow-cores with slots in their ends, of spring-latches in the principal core, said spring-latches adapted to enter the said slots and hold the cores in proper position, and constructed in such relation to the said elbow-cores that as the principal core is withdrawn the latches are pressed back into the same, substantially as and for the purposes described.

4. The combination, with the core E, having spring-latches located therein, and the elbow-cores G G, having slotted ends engaged by said latches, of the cores F F, one of which is united to the corresponding elbow by a dowel-connection and the "other having an adjustable screw-threaded connection with the other elbow, substantially as described.

In testimony whereof I sign this specification in the presence of two witnesses.

CHARLES H. MUCKENHIRN.

' Witnesses:

C. J. SHIPLEY, M. A. REEVE. 

